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SUMMARY:Analysis of Positively Charged Muonium and its Diffusion in Cadmiu
 m Oxide
DTSTART;VALUE=DATE-TIME:20220830T164000Z
DTEND;VALUE=DATE-TIME:20220830T170000Z
DTSTAMP;VALUE=DATE-TIME:20220826T120557Z
UID:indico-contribution-3735@indico.stfc.ac.uk
DESCRIPTION:Speakers: Samuel Cathcart (Francis Marion University)\nCadmium
  oxide is a transparent conducting oxide (TCO) that has many applications 
 in optoelectronic devices\, such as solar cells\, photo transistors and di
 odes. CdO is a naturally n-type TCO with hydrogen acting as a shallow dono
 r. MuSR zero field measurements were collected\, from 20 K to 800 K\, to i
 nvestigate the diffusion properties of positive Mu defects in a CdO powder
  sample. The neutral Mu shallow donor signal is seen up to 200 K. At this 
 temperature the neutral Mu ionizes. The calculated ionization energy is 11
 9 meV +/- 20 meV. This result in agreement with Cox\, et. al. [*J. Phys.: 
 Condens. Matter* **18**\, 1061 (2006)]. Two positive Mu sites are seen bel
 ow 425 K. Above 425 K\, one of the positive Mu sites becomes mobile and tr
 ansitions to the second positive Mu site. By 550 K\, all positive Mu have 
 transitioned to the second site. Details relating to the transition betwee
 n sites\, barrier energies\, and diffusion processes will be discussed in 
 the presentation.\n\nhttps://indico.stfc.ac.uk/event/53/contributions/3735
 /
LOCATION:Science and Technology Campus\, University of Parma
URL:https://indico.stfc.ac.uk/event/53/contributions/3735/
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